const path = require('path')
const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
const cors = require('koa2-cors');
const index = require('./routes/index')
// const users = require('./routes/users')
import session from 'koa2-cookie-session'



onerror(app)
app.use(async(ctx, next) => {
    ctx.token = ctx.query.token||ctx.request.body&&ctx.request.body.token||ctx.request.header.token;
    console.log('从URL,body,heade获取token设置在ctx.token', ctx.token)
    await next();
})
app.use(session({
  key: "SESSIONID",   //default "koa:sid" 
  expires:3, //default 7 
  path:"/" //default "/" 
}));
// middlewares
app.use(bodyparser({
  enableTypes:['json', 'form', 'text']
}))
app.use(cors())
app.use(json())
app.use(logger())
//app.use(require('koa-static')(__dirname + '/dist'))
app.use(require('koa-static')(path.join(__dirname,'../dist')))
app.use(views(__dirname + '/views', {
  extension: 'pug'
}))

// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  const ms = new Date() - start
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(index.routes(), index.allowedMethods())
//app.use(users.routes(), users.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
  console.error('server error', err, ctx)
});

module.exports = app
